Oligopoly and oligopsony have been studied extensively. However, the dual figure of the oligopsonistic-oligopolistic intermediary has not been. This dual personality has a double negative impact on the market, on one hand reduces the demand to producers who face a competitive market, lowering prices as buyers, and on the other hand reducing its offer by raising the prices as sellers. In this way,
... [Show full abstract] their benefits are increased buying cheap and selling expensive, affecting effective demand of the consumer and the effective supply of the initial producer.